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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Giant noise amplification in synchronously pumped optical parametric oscillators.

G D'Alessandro¹, C Brent Laforet

¹School of Mathematics, University of Southampton, Highfield, Southampton, UK. dales@soton.ac.uk

|March 3, 2009

Summary

Synchronously pumped optical parametric oscillators exhibit giant noise amplification up to 10^9. Pseudospectra identify regions and magnitudes of this significant optical noise amplification.

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Area of Science:

Nonlinear optics
Quantum optics
Laser physics

Background:

Optical parametric oscillators (OPOs) are crucial for generating tunable laser light.
Understanding noise properties in OPOs is essential for their application in sensitive measurements.
Synchronous pumping introduces unique dynamics affecting OPO noise characteristics.

Purpose of the Study:

To numerically investigate the phenomenon of giant noise amplification in synchronously pumped optical parametric oscillators (SPOPOs).
To identify the specific parameter regimes within SPOPOs that lead to extreme noise amplification.
To quantify the magnitude of this noise amplification effect.

Main Methods:

Numerical simulations were employed to model the behavior of the SPOPO.
Pseudospectra analysis was utilized as a key technique for identifying noise amplification regions.
The magnitude of noise amplification was estimated using the pseudospectra data.

Main Results:

Giant noise amplification, reaching levels of the order of 10^9, was numerically demonstrated in SPOPOs.
Pseudospectra successfully identified the parameter space conducive to this extreme noise amplification.
The methodology allowed for accurate estimation of the noise amplification magnitude.

Conclusions:

SPOPOs are capable of exhibiting exceptionally large noise amplification under specific operating conditions.
Pseudospectra provide an effective tool for characterizing and predicting noise behavior in such systems.
The findings have implications for the design and application of OPOs where noise control is critical.